Taking the Plow to Mars
We expect to take our food and supplies with us on a camping trip, maybe catch dinner on a fishing trip, or perhaps live off the land as the Lewis and Clark expedition did. However, this will not work if we really leave our planetary home. There is no life on the moon. If there is life on Mars, it is probably microscopic and not available for dinner. We are faced with the problem, particularly for Mars exploration and permanent habitation, to carry everything with us or to produce food and a breathable atmosphere from materials on hand. In the short term, we can probably supply a moon outpost with food, but as it becomes a permanent settlement, this approach will no longer be feasible. So, what to do?